標(biāo)題: Titlebook: Isotope Shifts in Atomic Spectra; W. H. King Book 1984 Springer Science+Business Media New York 1984 X-ray.atoms.experiment.isotope.laser. [打印本頁] 作者: AMASS 時間: 2025-3-21 18:27
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作者: Pantry 時間: 2025-3-21 22:29 作者: 時代 時間: 2025-3-22 01:07
A Short History of the Subject,visible light of wavelength 500 nm or 5000 ? (Angstrom) this is 3 × 10. Hz in 6 × 10. Hz, or in terms of wavelength, a typical shift is 2.5 pm or 0.025 ?. Such small shifts could not be observed before the advent of interferometric methods into spectroscopy. The first person to use such a method was作者: PHAG 時間: 2025-3-22 05:51
Introduction to the Theory of Mass Shifts in Optical Spectra,. interacting with a point nucleus of mass . via their mutual electrostatic attraction. In classical mechanics the two particles can be treated as one particle with a reduced mass ./(. + .) interacting with an infinitely massive particle at rest.作者: 掃興 時間: 2025-3-22 11:38
Introduction to the Theory of Field Shifts in Optical Spectra,not be studied, but the nuclear charge distribution can. The nuclear charge distribution can also be studied by scattering electrons off nuclei elastically. Since the first scattering experiments of Lyman .. (1951) the size of the charge distribution of many nuclei have been found. It has been found作者: Keratin 時間: 2025-3-22 16:37
Isotope Shifts in X-Ray Spectra,ompared with optical transitions, the interpretation of shifts in x-ray transitions is simpler but unfortunately their measurement with precision is not. In practice, the only x-ray transitions in which shifts can be usefully measured are the . lines, and the one invariably studied is the .α. line (作者: Sinus-Node 時間: 2025-3-22 20:40
Related Techniques for the Determination of Nuclear Structure,gives information about nuclear charge distributions. Isotope shifts can, in principle, give values of the change between isotopes in the mean square radius of the nuclear charge distribution, .〈..〉, but sometimes in practice they give only relative values between different isotope pairs. In such ca作者: Projection 時間: 2025-3-23 00:46 作者: ANTH 時間: 2025-3-23 02:31 作者: 卷發(fā) 時間: 2025-3-23 05:45 作者: temperate 時間: 2025-3-23 10:02 作者: 苦澀 時間: 2025-3-23 14:09
Related Techniques for the Determination of Nuclear Structure,x-ray energy studies on the other hand can give values of .〈..〉 of a useful precision for combination with optical isotope shift measurements. This often seems to be the case but, even so, the importance of electron scattering data should not be underestimated. The analysis of muonic x-ray energies 作者: jettison 時間: 2025-3-23 21:26 作者: Estimable 時間: 2025-3-24 00:49 作者: Creditee 時間: 2025-3-24 04:03
, F. R. S. , for having introduced me to the subject in the 1950s, and for supervising my efforts to measure isotope shifts in the spectrum of ruthenium. I thus approach the subject as an experimental atomic spectroscopist. This bias is obviously apparent in my use of the spectroscopist‘s notation of lower-up978-1-4899-1788-1978-1-4899-1786-7作者: justify 時間: 2025-3-24 09:50
Book 1984t links these two branches. It is a subject that has been studied for well over fifty years, but interest in the subject, far from flagging, has been stimulated in recent years. Fast computers have enabled theoreticians to evaluate the properties of many-electron atoms, and laser spectroscopy has ma作者: 疾馳 時間: 2025-3-24 10:55 作者: ELUC 時間: 2025-3-24 17:27
Isotope Shifts in X-Ray Spectra,1s.-2p.). The theoretical interpretation is simpler than that of optical transitions because only closed shell or single hole configurations are involved. The variation from element to element is smooth and gradual; each element and each stage of ionization is not completely different as in optical spectra.作者: 放逐某人 時間: 2025-3-24 21:14
A Short History of the Subject,ichelson, 1893). It is probable that some of the structure in some of the lines which Michelson observed and rejected in his search for a length standard were due to shifts between isotopes. However, in view of the then current nature of atomic theory, we can hardly blame Michelson for his failure to discover isotopes via their isotope shifts.作者: 外表讀作 時間: 2025-3-25 03:10
Introduction to the Theory of Field Shifts in Optical Spectra,ong interaction is of such short range that in all but the smallest nuclei it is saturated. This means that nuclear matter has a constant density independent of the number of nucleons in the nucleus ..作者: THROB 時間: 2025-3-25 05:53
Experimental Techniques,ne outer s electron (given by letters). Since the great majority of isotope shifts are smaller than these examples, it can be seen that isotope shifts are rarely larger than the Doppler width even for a light source run at such a low temperature as 500 K.作者: 不幸的人 時間: 2025-3-25 09:20 作者: organism 時間: 2025-3-25 14:13 作者: 有惡臭 時間: 2025-3-25 17:11 作者: Loathe 時間: 2025-3-25 21:31
Separation of Mass and Field Shifts in Optical Isotope Shifts,The isotope shift is to a very good approximation the sum of the mass shift and the field shift . Eq. (3.13) is, when generalized to the many-electron case,. where .. is the mass shift between isotopes with nuclear masses ∞ and M. Eq. (6.2) can be written as . where . is a constant that is independent of the mass ..作者: 中世紀(jì) 時間: 2025-3-26 04:05
Isotope Shifts and Other Relevant Work,No new experimental results are presented in this chapter, but in some cases the analysis of the results is new. Not every recent paper is mentioned, but I have tried to include all that seemed to me to be of major importance.作者: 千篇一律 時間: 2025-3-26 06:35 作者: 放縱 時間: 2025-3-26 08:42 作者: intricacy 時間: 2025-3-26 16:10
Sue Thompsonsolid medium when provided with stimulatory macromolecules operationally termed colony-stimulating factor (CSF) (3, 26, 35). A similar if not identical class of molecules also stimulates the proliferation of a precursor cell solely committed to macrophage differentiation, the colony-forming unit-per作者: Iniquitous 時間: 2025-3-26 19:00 作者: 過濾 時間: 2025-3-27 00:13 作者: CANDY 時間: 2025-3-27 03:07
, and , Species,onsists of 50 species, . usually known as spruce, also contains about 50 species, while . or pine numbers between 70 and 100 species. These three genera, found mainly in the northern hemisphere, contain many commercially important forest trees. Among the most important species are . (L.) Karst (silv作者: debunk 時間: 2025-3-27 07:05
IL-4 Knockout Micetive as well as in pathological responses. IL-4 can affect a variety of cells in multiple ways by regulating antibody production, hematopoiesis, the development of effector T-helper cell responses, and inflammatory responses. Therefore, IL-4-deficient mice are a powerful tool to assess the role of I作者: 承認(rèn) 時間: 2025-3-27 12:12 作者: 吊胃口 時間: 2025-3-27 15:01
Energy Transfer,or molecules typically emit at shorter wavelengths which overlap with the absorption spectrum of the acceptor. Energy transfer occurs without the appearance of a photon and is the result of long-range dipole-dipole interactions between the donor and acceptor. The term resonance energy transfer (RET)作者: 懸崖 時間: 2025-3-27 20:23
A Sentiment Analysis Software Framework for the Support of Business Information Architecture in the Tourist Sector,th factors have caused increased competition in the sector that in turn puts pressure on small and medium enterprises’ (SME) revenues and profitability. This study aims to apply neural network based sentiment analysis on social networks to generate a new information search channel that provides a gl作者: 帶傷害 時間: 2025-3-28 00:58 作者: SLAG 時間: 2025-3-28 04:10 作者: GEAR 時間: 2025-3-28 07:24 作者: 瘋狂 時間: 2025-3-28 13:48
Junying Chen,Diqin Li,Huaqing Minvector machine (SVM) algorithm are used for personalized recommendation and data mining of innovation and entrepreneurship. After the completion of the system design, the actual operation shows that the overall operation of the system is stable, which has a positive significance to promote the devel作者: 魅力 時間: 2025-3-28 17:47
Nurhidayah Hamzah,Nur Syazwina Marzuki,Fauzi Baharudin,Nur Liza Rahim,Nor Amani Filzah Mohd Kamil,Nor Azliza Akbar,Nur Shazlinda Mohd Zinon Controlling. Wesentlicher Bestandteil der vorliegenden Untersuchung war es somit, die Funktionsprinzipien der Free-TV-Branche zu kl?ren, ein dafür geeignetes Controllingkonzept darzustellen und mit diesen Vorarbeiten den Stand des Controlling in der deutschen TV-Praxis detailliert zu erfassen. Zu作者: elucidate 時間: 2025-3-28 22:08 作者: PANIC 時間: 2025-3-29 02:10 作者: ERUPT 時間: 2025-3-29 04:28 作者: cognizant 時間: 2025-3-29 10:48 作者: corporate 時間: 2025-3-29 13:52
